Μου φεύγουν τα νεύρα όταν πηγαίνω βόλτα στο πάρκο.

Here μου is the weak genitive form of εγώ and means something like to me / for me / my depending on context.

In this sentence, it marks the person affected by what is happening. A very literal breakdown is:

• μου = to me
• φεύγουν = leave / go away
• τα νεύρα = the nerves

So the structure is roughly the nerves leave me, which Greek uses idiomatically for I lose my patience / I get really irritated.

Greek often uses this weak genitive pronoun where English would use my or would simply make the person the subject.

Because in Greek, weak object pronouns like μου, σου, του, της normally appear right before the verb:

• Μου φεύγουν...
• Σου λέω...
• Του έδωσα...

So μου comes before φεύγουν because that is its normal position.

Also, Greek word order is fairly flexible, so placing μου first can sound very natural and can slightly foreground the speaker’s personal reaction.

Because the grammatical subject is τα νεύρα, which is plural.

• το νεύρο = the nerve
• τα νεύρα = the nerves

So the verb agrees with that plural subject:

• τα νεύρα φεύγουν = the nerves leave

That is why you get φεύγουν, not φεύγει.

Literally, τα νεύρα means the nerves. But in everyday Greek, νεύρα very often refers to nerves, irritation, tension, temper, frustration.

So in expressions like this, it does not just mean physical nerves in the body. It is emotional and idiomatic.

That is why a literal translation can sound strange in English, even though the Greek expression is natural.

Because Greek uses the definite article much more often than English does.

So Greek often says:

• τα νεύρα
• το κεφάλι
• τα μάτια
• η καρδιά

where English might say:

• nerves
• head
• eyes
• heart

In this sentence, τα νεύρα is just the normal Greek way to express the idea. The article does not need a special translation every time.

In a way, yes. Even though μου is technically a weak genitive pronoun, it often works where English would use my.

So Greek prefers structures like:

• μου πονάει το κεφάλι = my head hurts
• μου έσπασαν τα νεύρα = my nerves were shattered / I got extremely annoyed

Instead of using a separate possessive adjective, Greek very often uses μου with the noun and verb structure.

Because this sentence describes a habitual or repeated situation:

• when / whenever I go for a walk in the park

The present tense in Greek often expresses something that happens regularly or generally. So όταν πηγαίνω here is basically whenever I go.

It is not talking about one single future visit to the park. It is talking about a recurring experience.

Yes, but the nuance changes.

• όταν πηγαίνω = when/whenever I go, habitual, repeated
• όταν πάω = usually when I go in a more single-event or future-oriented sense

So:

• Μου φεύγουν τα νεύρα όταν πηγαίνω βόλτα στο πάρκο. = This happens regularly.

But:

• Μου φεύγουν τα νεύρα όταν πάω στο πάρκο αύριο. would point more to a specific occasion.

For a learner, the big idea is:

• πηγαίνω = ongoing / habitual
• πάω = more punctual / one trip / one occasion

Because όταν does not always need να.

In this sentence, όταν πηγαίνω uses the present indicative to describe a habitual action. That is perfectly normal.

Greek can also use όταν with forms that look like the subjunctive, especially for future or single events, for example:

• Όταν πάω, θα σου πω. = When I go, I’ll tell you.

So the pattern depends on meaning:

• όταν + present → repeated/habitual
• όταν + aorist-type form → single/future event

Because πηγαίνω βόλτα is a fixed everyday expression.

It means:

• go for a walk
• go out
• go for a stroll

So βόλτα here functions almost like part of the verbal expression, not like a normal noun that needs a separate preposition in English.

Compare:

• πηγαίνω βόλτα = I go for a walk / I go out
• βγαίνω βόλτα = I go out / I go for a walk

This is just how Greek packages the idea.

Because στο is the contracted form of:

• σε + το = στο

So:

• στο πάρκο = to/in the park

This contraction is standard and used all the time in Modern Greek:

• στο σπίτι
• στο σχολείο
• στον δρόμο (with masculine)
• στην πόλη (with feminine)

It can suggest either one depending on context, because σε in Modern Greek often covers both to and in/at.

In this sentence, πηγαίνω βόλτα στο πάρκο is naturally understood as something like:

• I go for a walk in the park
• or I go to the park for a walk

Both are close in meaning here. The important thing is that the walk is associated with the park.

Yes. Greek word order is flexible, although some orders sound more natural than others.

For example, you could also hear:

• Τα νεύρα μου φεύγουν όταν πηγαίνω βόλτα στο πάρκο.

That still means essentially the same thing.

But Μου φεύγουν τα νεύρα... sounds very natural because:

• the weak pronoun μου comes before the verb
• the emotional reaction is presented immediately

So yes, the order can change, but the original sentence is a very normal spoken-Greek order.

It is idiomatic.

A learner can understand the literal pieces, but the whole phrase is not meant to be translated word-for-word into natural English. It is the kind of expression Greek speakers use to talk about losing patience, getting worked up, or becoming very irritated.

So it is best learned as a chunk:

• μου φεύγουν τα νεύρα = I’m losing my patience / I get really irritated

That will help you sound more natural than trying to translate each word separately.